US5547480A - Cylindrical air filter with radially directed seal - Google Patents
Cylindrical air filter with radially directed seal Download PDFInfo
- Publication number
- US5547480A US5547480A US08/189,890 US18989094A US5547480A US 5547480 A US5547480 A US 5547480A US 18989094 A US18989094 A US 18989094A US 5547480 A US5547480 A US 5547480A
- Authority
- US
- United States
- Prior art keywords
- housing
- end cap
- filter
- filter element
- tubular
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0039—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with flow guiding by feed or discharge devices
- B01D46/0041—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with flow guiding by feed or discharge devices for feeding
- B01D46/0046—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with flow guiding by feed or discharge devices for feeding provoking a tangential stream
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0001—Making filtering elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0002—Casings; Housings; Frame constructions
- B01D46/0005—Mounting of filtering elements within casings, housings or frames
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
- B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
- B01D46/2411—Filter cartridges
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
- B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
- B01D46/2411—Filter cartridges
- B01D46/2414—End caps including additional functions or special forms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/88—Replacing filter elements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/02—Air cleaners
- F02M35/024—Air cleaners using filters, e.g. moistened
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2271/00—Sealings for filters specially adapted for separating dispersed particles from gases or vapours
- B01D2271/02—Gaskets, sealings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2271/00—Sealings for filters specially adapted for separating dispersed particles from gases or vapours
- B01D2271/02—Gaskets, sealings
- B01D2271/022—Axial sealings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2271/00—Sealings for filters specially adapted for separating dispersed particles from gases or vapours
- B01D2271/02—Gaskets, sealings
- B01D2271/027—Radial sealings
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S264/00—Plastic and nonmetallic article shaping or treating: processes
- Y10S264/48—Processes of making filters
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S55/00—Gas separation
- Y10S55/05—Methods of making filter
Definitions
- the present invention relates generally to air cleaners or air filters and more specifically to air cleaners with cylindrical pleated paper filter elements which are used primarily on the over-the-road trucks and agricultural vehicles. Such applications generally are severe filtering environments.
- U.S. Pat. No. 3,078,650 shows one prior art structure of air cleaner of this type.
- the air cleaner has a tubular metal housing with an inlet for dust laden air.
- a cylindrical pleated paper filter element is mounted within the housing.
- a clean air outlet communicates with the interior of the pleated paper filter element.
- a seal must be provided between the pleated paper element and the outlet so that the dust laden inlet air will be forced through the pleated paper media of the filter whereby particulates are removed from the air flow before it exits from the filter.
- the seal between the filter element and the outlet is provided by a gasket secured to the filter element. The gasket engages an end wall of the tubular housing with the filter element held in place by a yoke and associated bolt and nut assembly.
- U.S. Pat. No. 4,720,292 discloses another prior art structure for a cylindrical air filter of the type of the present invention.
- the housing of the '292 air filter is formed of a plastic material.
- a cylindrical pleated paper filter element is mounted within the housing.
- the pleated paper element has an open end for fluid communication with the air outlet.
- the open end of the filter element has a ring like end cap that is preferably made from an elastomer such as urethane foam which has a relatively soft, rubber-like consistency.
- the air filter element is mounted on the air outlet tube, and a seal is provided by engagement of the end cap with the tubular outlet member.
- a mold for the housing is typically needed.
- a separate mold would typically be used for housings that vary in size as well as variations in location of the air inlet.
- the tooling for molds for each possible application of the air filter can be quite expensive.
- the air cleaner of the present invention incorporates a tubular housing with an open end and an air inlet.
- An end cap is affixed to and encloses the open end of the tubular housing.
- the end cap has a generally cylindrical portion extending into the interior of the tubular housing.
- the filter element is generally cylindrical with an inner liner, outer liner and filter medium sandwiched there between.
- the filter element has an end cap formed of elastomeric material.
- the end cap has an opening into the interior of the filter element. The opening is defined by a generally cylindrical radially inward-facing surface with the opening having a diameter that is smaller than the outside diameter of the portion of the end cap that extends into the housing.
- the filter element is attached to the end cap by inserting the outlet portion of the end cap into the opening defined in the end cap of the filter element.
- the end cap of the filter element and the outlet portion of the end cap affixed to the housing provide a seal.
- a cover is removably mounted to enclose the second end of the tubular housing.
- the tubular housing is formed of a suitable metal material and the end cap is a molded plastic.
- the metal housing is provided with a plurality of engagement members positioned about its first end and projecting inwardly.
- the plastic end cap has a plurality of recesses formed therein which are adapted to receive the engagement members to affix the end cap to the housing.
- the present invention also relates to a method of manufacturing the housing of the preferred embodiment of the invention. It includes the steps of forming a tubular housing from a metal material with the tubular housing having first and second open ends and an air inlet. A plastic end cap is molded with an integral air outlet and a plurality of recesses in its outer circumference. The end cap is then inserted into one end of the metal housing. Engagement members are formed in the tubular housing to project inward into the recesses in the plastic end cap to affix the end cap to the housing.
- the present invention provides the advantages of a metal housing for air filters particularly designed for rugged environments and a filter element seal structure eliminating the mechanical arrangement such as that shown in the '650 patent described above.
- FIG. 1 is a view in perspective of the air filter of the present invention
- FIG. 2 is an elevational view in partial section with portions removed
- FIG. 3 is an enlarged fragmentary view in section illustrating the attachment of the end cap to the housing of the air filter of the present invention.
- Air cleaner 10 is a generally tubular housing 12 with a first end 14 and a second end 16.
- housing 12 is formed of a suitable metal material.
- Housing 12 has an air inlet 18 defining an opening 20 for the introduction of particulate laden air into filter 10.
- An end cap 22 is affixed to housing 12 at first end 14 to enclose first end 14 as will be described in more detail hereafter.
- End cap 22 is a generally planar circular base member 24 with an integral ring member 26 disposed at its outer circumference and enclosed within housing 12.
- a second ring member 28 is also formed integrally with base member 24 and positioned within housing 12.
- Ring members 26 and 28 are concentrically disposed with respect to each other. Also integrally formed with base member 24 is an air outlet 30 extending above the exterior surface of end cap 22. Air outlet has a tubular portion 32 extending into the interior of housing 12. Air outlet 30 defines an opening at 34 through which filtered air exits from air filter 10.
- Air filter element 36 Disposed within housing 12 is an air filter element 36.
- Air filter element 36 is of the type disclosed in U.S. Pat. No. 4,720,292, the disclosure of which is incorporated herein by reference. It is a cylindrical element having a cylindrical liner 38 and a cylindrical outer liner 40, both constructed from perforated metal.
- a cylindrical pleated paper filter element 42 is mounted between liners 38 and 40.
- Element 36 has a closed end 44 in the form of a circular cap of urethane foam material molded thereon and having a relatively soft, rubber-like consistency. Closed end 44 is molded over and holds together the ends of liners 38 and 40 and filter element 42 and extends across the end of filter element 36 to provide a closed end.
- Air filter element 36 has an open end disposed adjacent end cap 22.
- a ring-like end cap 46 is molded over the ends of liners 38, 36 and pleated paper filter element 42.
- End cap 46 is preferably made from an elastomeric material such as urethane foam material having a relatively soft, rubber-like consistency so that it is capable of functioning as a seal or gasket material.
- End cap 46 has a radially inward facing surface 48 adapted to engage the outer surface of tubular portion 32 of air outlet 30.
- Surface 48 defines a generally cylindrical opening with an inner diameter which is slightly smaller than the outside diameter of tubular portion 32.
- the elastomeric material of end cap 46 is compressed at surface 48 to provide a positive air seal between end cap 46 and air outlet 30.
- the open end of air filter element 36 is also captured between tubular portion 32 and second ring member 28 to properly position air filter element 36 within housing 12.
- Cover 50 Second end 16 of housing 12 is enclosed by a cover 50 which is removably mounted to housing 12.
- Cover 50 has an end member 52 and a side wall 54. Extending around side wall 54 is a ledge member 56. At second end 16 of housing 12, a flange portion 58 is provided which is received on ledge member 56.
- Cover 50 has a plurality of spring-loaded clamps 59, the structure of which is well known in the prior art, which engage flange portion 58 to secure cover 50 thereto.
- End member 52 of cover 50 engages the closed end 44 of air filter element 36.
- Cover 50 may also be provided with a particulate collection trap (not shown).
- end cap 22 As shown in more detail in FIGS. 2 and 3, ring member 26 of end cap 22 provided with a plurality of recesses 60 spaced about its circumference. At it first end 14, housing 12 has a plurality of inwardly projecting members 62 that mate with and are received within recesses 60 to affix end cap 22 to housing 12.
- end cap 22 is formed of a plastic material, such as polypropylene, while housing 12 is constructed of metal.
- Removable cover 50 may be either plastic or metal.
- Housing 12 and end cap 22 are constructed in the following manner. Metal housing 12 is made in accordance with well known prior art processes to the appropriate length and with air inlet 18 disposed at the desired location. End cap 22 is molded from a plastic material according to well known molding processes.
- End cap 22 is placed on first end 14 of housing 12 in a snap-fit frictional engagement.
- Housing 12 is stamped or indented inward about first end 14 at locations corresponding to recesses 60 in ring member 26. This metal stamping operation forms inward projections 62 that are received in recesses 62 to affix end cap 22 to housing 12.
- Air filter 10 is further assembled by installing air filter element 36 within housing 12 and attaching cover 50.
- the present invention in its preferred embodiment incorporates the advantageous seal structure of the '292 patent.
- the housing can be made according to various design specifications by a metal forming process eliminating the need and expense of designing a plastic mold for each filter configuration.
- the seal arrangement eliminates the mechanical structure used in air cleaners of the type shown in the U.S. Pat. No. 3,078,650.
Abstract
An air filter has a tubular metal housing with an air inlet and a plastic end cap affixed to one end of the housing. The opposite end of the housing is enclosed by a removable cover. The plastic end cap has an integral cylindrical air outlet with a portion thereof extending into the tubular housing. A generally cylindrical air filter element includes an inner liner, an outer liner, filter media captured therebetween, a closed end and an open end. The open end of the filter element has an end cap formed of an elastomeric material with an opening defined by a generally cylindrical radially inward-facing surface. The diameter of the opening is smaller than the outside diameter of that portion of the outlet member of the end cap that extends into the housing. The filter element is mounted on that portion of the outlet member extending into the tubular housing and the elastomeric material provides a seal.
Description
The present invention relates generally to air cleaners or air filters and more specifically to air cleaners with cylindrical pleated paper filter elements which are used primarily on the over-the-road trucks and agricultural vehicles. Such applications generally are severe filtering environments.
U.S. Pat. No. 3,078,650 shows one prior art structure of air cleaner of this type. The air cleaner has a tubular metal housing with an inlet for dust laden air. A cylindrical pleated paper filter element is mounted within the housing. A clean air outlet communicates with the interior of the pleated paper filter element. A seal must be provided between the pleated paper element and the outlet so that the dust laden inlet air will be forced through the pleated paper media of the filter whereby particulates are removed from the air flow before it exits from the filter. In the '650 patent the seal between the filter element and the outlet is provided by a gasket secured to the filter element. The gasket engages an end wall of the tubular housing with the filter element held in place by a yoke and associated bolt and nut assembly.
U.S. Pat. No. 4,720,292 discloses another prior art structure for a cylindrical air filter of the type of the present invention. In its preferred embodiment, the housing of the '292 air filter is formed of a plastic material. A cylindrical pleated paper filter element is mounted within the housing. The pleated paper element has an open end for fluid communication with the air outlet. The open end of the filter element has a ring like end cap that is preferably made from an elastomer such as urethane foam which has a relatively soft, rubber-like consistency. The air filter element is mounted on the air outlet tube, and a seal is provided by engagement of the end cap with the tubular outlet member.
In order to manufacture an air filter using a plastic housing, a mold for the housing is typically needed. A separate mold would typically be used for housings that vary in size as well as variations in location of the air inlet. The tooling for molds for each possible application of the air filter can be quite expensive.
The air cleaner of the present invention incorporates a tubular housing with an open end and an air inlet. An end cap is affixed to and encloses the open end of the tubular housing. The end cap has a generally cylindrical portion extending into the interior of the tubular housing. The filter element is generally cylindrical with an inner liner, outer liner and filter medium sandwiched there between. The filter element has an end cap formed of elastomeric material. The end cap has an opening into the interior of the filter element. The opening is defined by a generally cylindrical radially inward-facing surface with the opening having a diameter that is smaller than the outside diameter of the portion of the end cap that extends into the housing. The filter element is attached to the end cap by inserting the outlet portion of the end cap into the opening defined in the end cap of the filter element. The end cap of the filter element and the outlet portion of the end cap affixed to the housing provide a seal. A cover is removably mounted to enclose the second end of the tubular housing.
In the preferred embodiment the tubular housing is formed of a suitable metal material and the end cap is a molded plastic. The metal housing is provided with a plurality of engagement members positioned about its first end and projecting inwardly. The plastic end cap has a plurality of recesses formed therein which are adapted to receive the engagement members to affix the end cap to the housing.
The present invention also relates to a method of manufacturing the housing of the preferred embodiment of the invention. It includes the steps of forming a tubular housing from a metal material with the tubular housing having first and second open ends and an air inlet. A plastic end cap is molded with an integral air outlet and a plurality of recesses in its outer circumference. The end cap is then inserted into one end of the metal housing. Engagement members are formed in the tubular housing to project inward into the recesses in the plastic end cap to affix the end cap to the housing.
Thus, in its preferred embodiment the present invention provides the advantages of a metal housing for air filters particularly designed for rugged environments and a filter element seal structure eliminating the mechanical arrangement such as that shown in the '650 patent described above. These and other advantages of the present invention will become apparent with reference to the accompanying drawings, detailed description of the preferred embodiment, and claims.
FIG. 1 is a view in perspective of the air filter of the present invention;
FIG. 2 is an elevational view in partial section with portions removed;
FIG. 3 is an enlarged fragmentary view in section illustrating the attachment of the end cap to the housing of the air filter of the present invention.
Referring to the drawings wherein like numerals represent like parts throughout several views, there is disclosed in FIG. 1 an air cleaner or filter 10. Air cleaner 10 is a generally tubular housing 12 with a first end 14 and a second end 16. In the preferred embodiment housing 12 is formed of a suitable metal material. Housing 12 has an air inlet 18 defining an opening 20 for the introduction of particulate laden air into filter 10. An end cap 22 is affixed to housing 12 at first end 14 to enclose first end 14 as will be described in more detail hereafter. End cap 22 is a generally planar circular base member 24 with an integral ring member 26 disposed at its outer circumference and enclosed within housing 12. A second ring member 28 is also formed integrally with base member 24 and positioned within housing 12. Ring members 26 and 28 are concentrically disposed with respect to each other. Also integrally formed with base member 24 is an air outlet 30 extending above the exterior surface of end cap 22. Air outlet has a tubular portion 32 extending into the interior of housing 12. Air outlet 30 defines an opening at 34 through which filtered air exits from air filter 10.
Disposed within housing 12 is an air filter element 36. Air filter element 36 is of the type disclosed in U.S. Pat. No. 4,720,292, the disclosure of which is incorporated herein by reference. It is a cylindrical element having a cylindrical liner 38 and a cylindrical outer liner 40, both constructed from perforated metal. A cylindrical pleated paper filter element 42 is mounted between liners 38 and 40. Element 36 has a closed end 44 in the form of a circular cap of urethane foam material molded thereon and having a relatively soft, rubber-like consistency. Closed end 44 is molded over and holds together the ends of liners 38 and 40 and filter element 42 and extends across the end of filter element 36 to provide a closed end.
As shown in more detail in FIGS. 2 and 3, ring member 26 of end cap 22 provided with a plurality of recesses 60 spaced about its circumference. At it first end 14, housing 12 has a plurality of inwardly projecting members 62 that mate with and are received within recesses 60 to affix end cap 22 to housing 12. As previously described, in the preferred embodiment end cap 22 is formed of a plastic material, such as polypropylene, while housing 12 is constructed of metal. Removable cover 50 may be either plastic or metal. Housing 12 and end cap 22 are constructed in the following manner. Metal housing 12 is made in accordance with well known prior art processes to the appropriate length and with air inlet 18 disposed at the desired location. End cap 22 is molded from a plastic material according to well known molding processes. End cap 22 is placed on first end 14 of housing 12 in a snap-fit frictional engagement. Housing 12 is stamped or indented inward about first end 14 at locations corresponding to recesses 60 in ring member 26. This metal stamping operation forms inward projections 62 that are received in recesses 62 to affix end cap 22 to housing 12. Air filter 10 is further assembled by installing air filter element 36 within housing 12 and attaching cover 50.
From the above description, it can be seen that the present invention in its preferred embodiment incorporates the advantageous seal structure of the '292 patent. The housing can be made according to various design specifications by a metal forming process eliminating the need and expense of designing a plastic mold for each filter configuration. Moreover, the seal arrangement eliminates the mechanical structure used in air cleaners of the type shown in the U.S. Pat. No. 3,078,650.
Although a preferred embodiment of the invention has been disclosed, it should be understood that the same is capable of modification without departure from the scope and spirit of the invention as defined in the following claims.
Claims (4)
1. An air filter comprising:
a tubular metal housing having a particulate laden air inlet and first and second ends;
a plastic end cap with a substantially cylindrical air outlet member with a portion thereof extending into said tubular housing, said portion having an outside diameter;
means for affixing said plastic end cap to said tubular housing at said first end thereof comprising a plurality of indentations positioned about said first end of said tubular housing and projecting inwardly, said plastic end cap having a plurality of recesses formed therein angling radially inward and toward said first end and having means for receiving said indentations to affix said plastic end cap to said housing;
a substantially cylindrical filter element comprising a filter media and means for supporting said media, said filter element having a first end and a second end;
said filter element having a filter end cap on said first end thereof, said filter end cap formed of elastomeric material and having a substantially cylindrical radially inward-facing surface defining an opening into the interior of said filter element, said opening having a diameter smaller than the outside diameter of said portion of said outlet member extending into said tubular housing whereby said filter element is mounted on said portion of said outlet member to form a seal between said portion of said outlet member and said filter element; and
means for closing said second end of said housing.
2. A housing for use with a substantially cylindrical air filter having a filter media, means for supporting the filter media and an end cap formed of elastomeric material and having a substantially cylindrical radially inward-facing surface defining an opening into the interior of the filter element, the opening having a first diameter, said housing comprising:
a tubular metal member with a particulate laden air inlet and first and second ends and having a plurality of portions positioned about said tubular member first end and projecting radially inwardly and toward said tubular member first end;
a plastic end cap at a first end of said housing with a substantially cylindrical air outlet member with a portion thereof extending into said tubular member, said portion having an outside diameter larger than the first diameter and on which the air filter is mounted with a radial seal between said portion and the inward facing surface of said plastic end cap, wherein said plastic end cap includes a plurality of complementary recesses formed therein configured for receiving said plurality of inwardly projecting portions; and
means for closing a second end of said housing.
3. An air filter housing according to claim 2, wherein each of said plurality of complementary recesses project inwardly and toward said tubular member first end.
4. An air filter housing according to claim 2, wherein said plurality of inwardly projecting portions comprise indented portions of the tubular member.
Priority Applications (20)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/189,890 US5547480A (en) | 1994-01-21 | 1994-01-21 | Cylindrical air filter with radially directed seal |
EP95907351A EP0740574B1 (en) | 1994-01-21 | 1995-01-09 | Filter housing |
PCT/US1995/000264 WO1995019832A1 (en) | 1994-01-21 | 1995-01-09 | Cylindrical air filter with radially directed seal and method of manufacturing a housing for same |
DE29521172U DE29521172U1 (en) | 1994-01-21 | 1995-01-09 | Cylindrical air filter with radially aligned seal |
MX9602817A MX9602817A (en) | 1994-01-21 | 1995-01-09 | Cylindrical air filter with radially directed seal and method of manufacturing a housing for same. |
BR9506629A BR9506629A (en) | 1994-01-21 | 1995-01-09 | Air filter method of manufacturing a housing for an air filter and housing for use with a generally cylindrical air filter |
JP51957995A JP3801625B2 (en) | 1994-01-21 | 1995-01-09 | Cylindrical air filter with radial seal and method of manufacturing the air filter housing |
DE69513145T DE69513145T2 (en) | 1994-01-21 | 1995-01-09 | Filter housing |
ES95907351T ES2141331T3 (en) | 1994-01-21 | 1995-01-09 | CYLINDRICAL AIR FILTER WITH RADIAL CLOSURE AND MANUFACTURING PROCEDURE FOR A HOUSING FOR THE SAME. |
AU15615/95A AU692514B2 (en) | 1994-01-21 | 1995-01-09 | Cylindrical air filter with radially directed seal and method of manufacturing a housing for same |
CN95191278A CN1068240C (en) | 1994-01-21 | 1995-01-09 | Cylindrical air filter with radially directed seal and method of manufacturing a housing for same |
KR1019960704012A KR100352201B1 (en) | 1994-01-21 | 1995-01-09 | Cylindrical air filter with radially directed seal and method of manufacturing a housing for same |
CA002181577A CA2181577A1 (en) | 1994-01-21 | 1995-01-09 | Cylindrical air filter with radially directed seal and method of manufacturing a housing for same |
ZA95456A ZA95456B (en) | 1994-01-21 | 1995-01-20 | Cylindrical air filter with radially directed seal and method of manufacturing a housing of same |
US08/675,081 US5693109A (en) | 1994-01-21 | 1996-07-03 | Cylindrical air filter with radially directed seal |
FI962885A FI962885A (en) | 1994-01-21 | 1996-07-17 | Cylindrical air filter and method of making a housing therefor |
US08/878,399 US5863313A (en) | 1994-01-21 | 1997-06-18 | Cylindrical air filter with radially directed seal |
US09/178,661 US6187240B1 (en) | 1994-01-21 | 1998-10-26 | Method of assembling an air cleaner |
HK98115244A HK1013968A1 (en) | 1994-01-21 | 1998-12-23 | Filter housing |
US09/756,258 US6312491B2 (en) | 1994-01-21 | 2001-01-08 | Cylindrical air filter with radially directed seal and method of manufacturing a housing for same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/189,890 US5547480A (en) | 1994-01-21 | 1994-01-21 | Cylindrical air filter with radially directed seal |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US08/675,081 Continuation US5693109A (en) | 1994-01-21 | 1996-07-03 | Cylindrical air filter with radially directed seal |
Publications (1)
Publication Number | Publication Date |
---|---|
US5547480A true US5547480A (en) | 1996-08-20 |
Family
ID=22699191
Family Applications (5)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US08/189,890 Expired - Lifetime US5547480A (en) | 1994-01-21 | 1994-01-21 | Cylindrical air filter with radially directed seal |
US08/675,081 Expired - Fee Related US5693109A (en) | 1994-01-21 | 1996-07-03 | Cylindrical air filter with radially directed seal |
US08/878,399 Expired - Lifetime US5863313A (en) | 1994-01-21 | 1997-06-18 | Cylindrical air filter with radially directed seal |
US09/178,661 Expired - Lifetime US6187240B1 (en) | 1994-01-21 | 1998-10-26 | Method of assembling an air cleaner |
US09/756,258 Expired - Fee Related US6312491B2 (en) | 1994-01-21 | 2001-01-08 | Cylindrical air filter with radially directed seal and method of manufacturing a housing for same |
Family Applications After (4)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US08/675,081 Expired - Fee Related US5693109A (en) | 1994-01-21 | 1996-07-03 | Cylindrical air filter with radially directed seal |
US08/878,399 Expired - Lifetime US5863313A (en) | 1994-01-21 | 1997-06-18 | Cylindrical air filter with radially directed seal |
US09/178,661 Expired - Lifetime US6187240B1 (en) | 1994-01-21 | 1998-10-26 | Method of assembling an air cleaner |
US09/756,258 Expired - Fee Related US6312491B2 (en) | 1994-01-21 | 2001-01-08 | Cylindrical air filter with radially directed seal and method of manufacturing a housing for same |
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EP (1) | EP0740574B1 (en) |
JP (1) | JP3801625B2 (en) |
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CA (1) | CA2181577A1 (en) |
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WO (1) | WO1995019832A1 (en) |
ZA (1) | ZA95456B (en) |
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Also Published As
Publication number | Publication date |
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FI962885A0 (en) | 1996-07-17 |
HK1013968A1 (en) | 1999-09-17 |
FI962885A (en) | 1996-09-11 |
KR100352201B1 (en) | 2002-11-13 |
CN1139884A (en) | 1997-01-08 |
AU692514B2 (en) | 1998-06-11 |
CA2181577A1 (en) | 1995-07-27 |
DE69513145T2 (en) | 2000-05-25 |
DE69513145D1 (en) | 1999-12-09 |
BR9506629A (en) | 1997-09-16 |
US5693109A (en) | 1997-12-02 |
US6312491B2 (en) | 2001-11-06 |
US20010000845A1 (en) | 2001-05-10 |
EP0740574A1 (en) | 1996-11-06 |
WO1995019832A1 (en) | 1995-07-27 |
AU1561595A (en) | 1995-08-08 |
JP3801625B2 (en) | 2006-07-26 |
DE29521172U1 (en) | 1997-03-13 |
ZA95456B (en) | 1996-07-22 |
ES2141331T3 (en) | 2000-03-16 |
US6187240B1 (en) | 2001-02-13 |
EP0740574B1 (en) | 1999-11-03 |
MX9602817A (en) | 1997-06-28 |
JPH09508850A (en) | 1997-09-09 |
US5863313A (en) | 1999-01-26 |
CN1068240C (en) | 2001-07-11 |
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